Heat deformable laminates and process of making same

Details Heat deformable laminates and process of making same Heat deformable laminates and process of making same

1974-02-12

1978-07-04

McCamish, Marion E.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

264 90, 264134, 264321, 428172, 428315, B32B 312, B32B 326

Patent

active

040989380

ABSTRACT:
A method for forming a contoured support member from a laminate of a thermoplastic sheet and a layer of resilient, flexible, stretchable, crosslinked, thermoset-type polyurethane foam including the steps of heating the laminate to a temperature at which the thermoplastic sheet is in a plastic state, and the foam layer retains its resilient, flexible, stretchable properties; deforming the laminate while the thermoplastic sheet is in its plastic state such that the thermoplastic sheet and foam layer assume the same general configuration and setting the thermoplastic sheet in its deformed configuration for retaining the foam layer in its deformed configuration.
A contoured support member including a stable, contoured, thermoplastic sheet united to a layer of a resilient, flexibly stretchable, crosslinked, thermoset-type polyurethane foam which has the same contour as the thermoplastic sheet and is retained in its contoured configuration by the thermoplastic sheet.

REFERENCES:
patent: 2801947 (1957-08-01), Winchester et al.
patent: 3215584 (1965-11-01), McConnell et al.
patent: 3534852 (1970-10-01), Posner
patent: 3708362 (1973-01-01), Winchcombe

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